sql-server-wait-statistics-object.md

title	SQL Server, Wait Statistics Object | Microsoft Docs
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ms.date	03/01/2017
ms.prod	sql
ms.prod_service	database-engine
ms.component	performance-monitor
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ms.technology	database-engine
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ms.topic	conceptual
helpviewer_keywords	Wait Statistics object SQLServer:Wait Statistics
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SQL Server, Wait Statistics Object

[!INCLUDEappliesto-ss-xxxx-xxxx-xxx-md] The SQLServer:Wait Statistics performance object contains performance counters that report information about wait status.

The table below lists the counters that the Wait Statistics object contains.

SQL Server Wait Statistics counters	Description
Lock waits	Statistics for processes waiting on a lock.
Log buffer waits	Statistics for processes waiting for log buffer to be available.
Log write waits	Statistics for processes waiting for log buffer to be written.
Memory grant queue waits	Statistics for processes waiting for memory grant to become available.
Network IO waits	Statistics relevant to wait on network I/O.
Non-Page latch waits	Statistics relevant to non-page latches.
Page IO latch waits	Statistics relevant to page I/O latches.
Page latch waits	Statistics relevant to page latches, not including I/O latches.
Thread-safe memory objects waits	Statistics for processes waiting on thread-safe memory allocators.
Transaction ownership waits	Statistics relevant to processes synchronizing access to transaction.
Wait for the worker	Statistics relevant to processes waiting for worker to become available.
Workspace synchronization waits	Statistics relevant to processes synchronizing access to workspace.

Each counter in the object contains the following instances:

Item	Description
Average wait time (ms)	Average time for the selected type of wait.
Cumulative wait time (ms) per second	Aggregated wait time per second, for the selected type of wait.
Waits in progress	Number of processes currently waiting on the following type.
Waits started per second	Number of waits started per second of the selected type of wait.

See Also

Monitor Resource Usage (System Monitor)